Akira Sano

Kansai Medical University · Department of Radiology

Background: Dexmedetomidine(Precedex®)is an agonist of a2-adrenergic receptors in certain parts of the brain. It was approved for "procedural sedation in the non-intubation in under local anesthesia" in June 2013 in Japan. However, because of metabolism delay, dexmedetomidine has to be administered carefully to patients with liver dysfunction. Pu...

Abstract Purpose: The purpose of this study was to evaluate an aspiration-type semiautomatic cutting biopsy needle for biopsy of bovine tissue. Material and methods: Aspiration-type semiautomatic cutting biopsy needles (18 gauge × 160 mm) with aspiration (Group A), aspiration-type semiautomatic biopsy needles without aspiration (Group Wo), or norma...

To compare radiation exposure of nurses when performing nursing tasks associated with interventional procedures depending on whether or not the nurses called out to the operator before approaching the patient. In a prospective study, 93 interventional radiology procedures were randomly divided into a call group and a no-call group; there were 50 pr...

Purpose. To assess differences in dose distribution of a vertebral body injected with bone cement as calculated by radiation treatment planning system (RTPS) and actual dose distribution. Methods. We prepared two water-equivalent phantoms with cement, and the other two phantoms without cement. The bulk density of the bone cement was imported into R...

This review described diagnosis and treatment of hepatocellular carcinoma. Hepatocellular carcinoma commonly develops in patients with chronic hepatitis caused by hepatitis C and hepatitis B virus. Ultrasound imaging, computerized tomography and magnetic resonance imaging are useful for disclosing hepatocellular carcinoma. Surgical resection, percu...

To evaluated the utility of a 5-mm long point marker system for CT localisation of small pulmonary nodules prior to thorascopic resection. Percutaneous localisation of 57 pulmonary nodules was performed with computed tomographic (CT) guidance in 52 patients. The size of the nodules ranged from 3mm to 20mm (mean: 9mm, median: 8mm). The mean distance...

A 33-year-old man with bilateral popliteal artery entrapment syndrome (PAES) presented with right calf claudication. He underwent radiological studies including conventional arteriography, multidetector row CT (MDCT), and magnetic resonance imaging (MRI) of the lower extremities. He had been fine since birth and athletic in his school days. Axial t...

Not only is a radiation ulcer nonviable itself, but the surrounding irradiated tissue also shows poor healing. Therefore, healing in an irradiated field cannot be expected if a flap used for reconstruction fails even partially. For repair of radiation ulcers, a flap with a stable blood supply is required. A superiorly based vertical rectus abdomini...

The nutcracker phenomenon (NCP) is the significant compression of the left renal vein (LRV) by the aorta and superior mesenteric artery (SMA), and found in the patients with so-called idiopathic renal bleeding, orthostatic proteinuria and severe orthostatic intolerance. The purpose of this study is to investigate clinical implications among these d...

A 20-year-old patient who had a single ventricle and pulmonary stenosis presented with recurrent hemoptysis 12 years after a Fontan-type operation. He was referred to us because of unsuccessful treatment with a tentative diagnosis of lung tuberculosis for 3 months. He had been relatively well for the prior 12 years, although he had attacks of parox...

Thirty patients with malignant esophageal stenosis underwent Ultraflex esophageal stent deployment and were followed up for a maximum of 29 months from June 1995 to August 2001 in Tenri Hospital. Twelve stents were in the upper esophagus, and nine each in the middle and lower esophagus. The procedures were successful and dysphagia scores improved f...

A 39-year-old woman came to us complaining of severe anemia (hemoglobin: 2.3 g/dl) and a painful right breast that was entirely occupied by an ulcerative, foul-smelling tumor approximately 20 cm in maximum dimension. The tumor, which was determined to be mucinous adenocarcinoma at biopsy, had invaded the chest wall with multiple lung metastases (T4...

A 35-year-old woman with locally advanced stage IIIB breast cancer (medullary carcinoma) 12 cm in diameter underwent neoadjuvant chemotherapy consisting of three courses of intraarterial infusion [adriamycin (ADR), mitomycin (MMC), cisplatin (CDDP), 5-fluorouracil (5FU)] and four cycles of systemic chemotherapy (ADR, epirubicin, cyclophosphamide, M...

We analyzed response, side effects, and local control rates of a multimodal treatment consisting of intraarterial infusion chemotherapy (IAIC) and radiotherapy with or without surgery for patients with locally advanced or recurred breast cancer. Thirty-three patients, clinically diagnosed as stage IIB in 1, IIIA in 2, IIIB in 12, IV in 18, were tre...

Pulmonary eosinophilic granuloma is a rare disease. Age of onset, cigarette smoking, recurrent pneumothorax, and extrapulmonary lesions with the following CT findings make it possible to diagnose eosinophilic granuloma. Diffuse centrilobular micronodules, nodules, cavitated nodules, thin- and thick-walled cysts are manifestations of CT findings, wh...

A 49 year-old woman was referred for the radiological evaluation of insulinoma. She underwent abdominal angiograms, multidetector CT-angiograms and hepatic venous sampling following intraarterial calcium load. MDCT-angiograms with Siemens Somatom Plus4 VZ demonstrated highly enhanced nodules in the pancreas by simultaneously injecting the contrast...

An early diffuse type in the pattern of the postoperative intrahepatic recurrence of hepatocellular carcinoma has been recognized. The purpose of this study was to elucidate risk factors for diffuse recurrence of hepatocellular carcinoma. The subjects involved in the present study were 114 patients with hepatocellular carcinomas resected in Tenri H...

In the past five years we experienced 9 fatigued disabled children who were intermittently or persistently absent from school. They had been suspected to be burdened with psychosomatic disorders, having orthostatic hypotension, postural tachycardia, or other autonomic dysfunction symptoms. Investigating the cause of moderate orthostatic proteinuria...

For the purpose of local control and breast conservation, intraarterial infusion chemotherapy combined with radiotherapy has been indicated in patients with locally advanced breast cancer both in primary and recurrent cases. The present series, evaluated during the past 4 years, consisted of 15 patients 35-83 years of age, with invasive ductal carc...

Intracranial calcification secondary to radiotherapy is extremely rare condition. Most cases reported are in the basal ganglia related with radiotherapy in childhood. We report an adult case in which calcification following radiotherapy developed in cerebral subcortex. A 53-year-old female with left occipital meningioma was a surgical candidate. On...

A rare congenital anomaly of the left lower pulmonary artery is presented. A 39-year-old woman was admitted to our hospital for evaluation of a splenic mass. Abdominal CT disclosed abnormal vessels in the left lower lobe. Angiography revealed a large systemic artery from the descending aorta supplying the basilar segments of the left lower lobe. Co...

HRCT of 5 patients with diffuse aspiration bronchiolitis (DAB) were analyzed and CT-pathological correlation was performed in 2 cases. HRCT images of DAB were characterized with diffuse centrilobular nodules and were similar to those of diffuse panbronchiolitis (DPB) in distribution. In DAB all patients had causative diseases for chronic aspiration...

Carmofur, a derivative of 5-fluorouracil, has recently been noted to have an infrequent but serious association with leukoencephalopathy. To our knowledge, there has been no report of early MRI findings in this leukoencephalopathy. We describe a case in which diffuse high signal intensity of the entire cerebral white matter, including the corpus ca...

The present series consisted of 55 patients with non-small cell lung cancer in stage III who underwent radiotherapy from 1986-1989. They were divided into two groups: 35 patients with combined concurrent bronchial artery infusion (BAI) of CDDP (50 mg) and unevenly fractionated radiotherapy (combined group) and 20 with evenly fractionated irradiatio...

Based on reports that Gd-DTPA contributes to the detection of tumors, we used it in 31 cases (97 lesions) of spinal bone metastases. The result was that Gd-DTPA increased the intensity of tumors and the surrounding bone marrow to almost the same level in 53%. To show the metastases clearly, an existing subtraction command system was utilized. The t...

Three cases of percutaneous retrieval of foreign bodies that migrated into the pulmonary artery are described in this paper. All of the intravascular foreign bodies were attributed to SVC catheters for intravenous hyperalimentation (IVH) therapy, an accidentally cut strip of indwelling SVC catheter in two patients and a fragment of guide wire used...

One hundred and three patients with known malignancy and suspected bone metastasis underwent magnetic resonance imaging. In 93%, the metastatic lesions, detected both on plain films and radionuclide bone scans, showed decreased signal intensity on T1-weighted images and increased signal intensity on T2-weighted images. All lesions, except one lesio...

To investigate the MR appearance of ossification of the posterior longitudinal ligament (OPLL) of the cervical spine. A retrospective review of MR images and conventional tomograms in 147 patients. In the sagittal plane, proton-density images identified the ossified lesions more clearly than did T1- and T2-weighted images. All axial sequences ident...

Adriamycin-Lipiodol suspension was administered to 44 patients with metastatic liver tumor using the transcatheter arterial infusion method. The result revealed 23% in the over all effect (partial response or more) of the therapy which was evaluated by comparing the CT images of the tumor, 47% in the 25% or more of the decrease of the tumor, and 65...

This paper deals with a study to obtain the optimal sequence of gradient echo (GE) for T1- and T2*-weighted images similar to T1- and T2-weighted images of spin echo (SE). Two GE sequences, fast low angle shot (FLASH) and fast imaging with steady-state precession (FISP), were performed in 15 cases of liver metastasis in various combination of flip...

The effect of radiation therapy on bone metastasis was studied by MR imaging. The present series included Groups I and II, Group I consisted of 32 patients with bone metastasis from lung cancer, breast cancer, renal cell carcinoma and various other malignancies that were evaluated by MR imaging before and after radiation therapy, Group II included...

MR imaging was performed in three patients with mucocutaneous malignant melanoma of the head and neck, and surgical specimens were investigated in MR-pathological correlation. Two of 3 cases were revealed to be melanotic melanoma; one arose in the maxillary sinus, and another in the bulbar conjunctiva. The remaining case was amelanotic melanoma ori...

We found that patients with orthostatic protein-uria had entrapment of the left renal vein (LRV) by the aorta and superior mesenteric artery (SMA). Of 15 patients studied, ultrasonographic examination showed 13 cases of typical LRV entrapment with prestenotic dilatation, and 2 cases of mild LRV compression between the aorta and SMA. Intra-arterial...

We performed CT-guided needle biopsy of 92 thoracic mass lesions using a Rotex-II screw needle. Fast stain technique was performed for an immediate evaluation of the specimen in the last 39 procedures. The overall accuracy of malignancy was 93.2%, and the correct histological typing was obtained in 82.8% of malignancy proven at surgery or autopsy....

The diagnostic potentiality of MR imaging for lung cancer was researched in 17 patients in evaluating local invasions based on surgical-histological evidence. Comparative reviewing with CT was also performed. MR imaging appeared to have an ability unique to portray malignant invasions somewhere such as in the hili or apices. On the other hand, ther...

High resolution computed tomography (CT) was applied to seven patients with hypersensitivity pneumonitis clinically confirmed. The CT findings include; (1) granular pattern with acino-centric distribution, (2) increase in density of haziness in the lung fields, (3) multiform high density areas, and (4) "subpleural curvilinear shadow" localized post...

Radionuclide imaging with N-isopropyl-(I-123)p-iodoamphetamine ([123I]IMP) was performed in a patient with recurrent bronchial carcinoid tumor. Increased accumulation of [123I]IMP was observed in the known lesions of the brain and neck on both tomographic and planar images. Scintigraphy also revealed unknown metastatic lesions of the paraaortic lym...

肺癌に対するBAIと放射線治療併用効果を2つのプロトコール群を比較しながら検討した.CDDP動注群は非小細胞癌の23例で, 50mg動注直後に腫瘍濃染部分に限局して350～400cGy照射した.2剤動注群は57例で扁平上皮癌にはPEP30mg+CQ6mg, 小細胞癌にはADR20～30mg+MMC10mg, 腺癌, 大細胞癌にはADR20～30mg+MMC10mgか, PEP30mg+MMC10mgを動注し, 均等分割照射を併用した.BAIの併用で, 腫瘍の50%縮小期間の短縮が認められ, 小細胞癌に対してはADR+MMC, 非小細胞癌にはCDDPの縮小効果が良好であった.

We analysed the 44 DS-Bronchial arteriograms (DSBAG) of lung cancer with an attention to the demonstration of metastasized mediastinal lymphnodes. The stain of lymphnode is well demonstrated in the pericarinal region, such as station #7, #R4 along the course of bronchial arteries. The swollen nodes with stains on DSBAG show the good reduction rates...

Bronchial artery infusion (BAI) has been looked to as an important adjunct for controlling lung cancer. However, there are some anatomic facts to meet in performing angiography: multiplicity of the bronchial artery with wide variation of ramification pattern. To deal with these problems, since 1984, we have been working with DSA apparatus (Siemens:...

HRCT was carried out in twenty patients with diffuse interstitial pneumonia: 13 cases of IIP, 3 of BOOP, 2 of drug-induced pneumonia, 1 of rheumatoid lung and acute interstitial pneumonia of unknown origin. With special attention to inflammatory activity, the patients underwent HRCT periodically during the treatment. Correlative investigation betwe...

Among children with asymptomatic hematuria, 28 cases of nonglomerular idiopathic renal bleeding were subjected to this series of study. Intra-arterial digital subtraction angiography (DSA) and/or renal venography were performed to investigate the hematuria of unknown etiology. DSA clearly demonstrated the entrapment of the left renal vein (LRV), or...

Ten patients with hepatoma who had received radiotherapy for their metastatic sites have been reviewed. In 13 lesions of bone metastasis in 7 patients complete pain relief from 5 lesions (38%) was achieved, while partial relief (54%) was obtained in other lesions. Of 3 patients with a brain metastasis, one attained complete symptomatic improvement...

To achieve prolonged breath-holding, oxygen was administered just before dynamic CT and high resolution lung CT. Oxygen administration has proved to be a supportive means to improve the quality of CT studies.

A case of right periureteric venousring, associated with retrocaval ureter, is presented with illustrative CT images.

We report on an adult case of preduodenal portal vein illustrated by computed tomography (CT) and angiography. These diagnostic modalities were initially performed to evaluate a coexisting pancreatic cancer. Contrast-enhanced CT demonstrated unusual positioning of the portal vein ventral to the duodenum. The superior mesenteric-portal vein, which w...

Portopulmonary venous anastomosis is a potential channel for systemic arterial embolization during embolization procedures for bleeding esophageal varices. To document the presence of such anastomoses, 15 patients with esophageal varices were studied by real-time contrast echocardiography combined with transhepatic cineportography. Cinefluorographi...

Analysis of portal collaterals by percutaneous transhepatic portography combined with cine-fluorography disclosed porto-pulmonary venous anastomosis in four out of 22 patients with portal hypertension. The characteristic radiological features were a sudden spurt of contrast medium from a venous collateral located near the hilus of the left lung and...

A combined work-up of emergency endoscopy and angiography has proved effective both in the diagnosis and treatment of patients with severe gastrointestinal bleeding. Of twenty cases with gastrointestinal bleeding, emergency endoscopy was performed to 18 cases immediately before emergency angiography, detectring hemorrhagic lesions in 13 cases. Othe...

A fatal female case of cerebral falciparum malaria who was accidentally, artificially and directly infected in Japan through nursing an imported falciparum malaria was experienced. These observations raised a question as to whether the disseminated intravascular coagulation (DIC) would occur in falciparum malaria. Then, 84 Congolese patients with u...

A 21-year-old nurse was admitted to Tenri Hospital on June 25, 1973 in comatous state. She had neither been to the malarial endemic area nor been transfused. However, three weeks before admission she had taken care of a patient with falciparum malaria as a nurse for two days. Six days before admission she had suffered from fever and headache. And t...