Article

Radiation-induced temporary hair loss as a radiation damage only occurring in patients who had the combination of MDCT and DSA.

Department of Radiology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa-ken 216-8511, Japan.
European Radiology (impact factor: 3.22). 02/2005; 15(1):41-6. DOI:10.1007/s00330-004-2459-1 pp.41-6
Source: PubMed

ABSTRACT As imaging technologies become increasingly advanced, it is possible to obtain detailed morphological information as well as functional imaging data. In some imaging technologies, the radiation dose increases with the ability to obtain better images or more detailed information. We encountered three cases of temporary bandage-shaped hair loss, which was caused by perfusion studies of the head by multi-detector row computed tomography (MDCT) for evaluation of cerebral blood flow in patients with vascular disorders. In all three patients with temporary hair loss, two angiographies of the head had been performed in the period of serial CT examinations. This suggested the possibility that radiation exposure from angiography performed in serial examinations, combined with the perfusion studies of the head with MDCT, played an important role in this temporary, bandage-shaped hair loss. Radiologists should be aware that a cumulative or multiplier effect of radiation exposure from multiple diagnostic techniques may result in hair loss and other types of radiation complications.

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Keywords

bandage-shaped hair loss
 
cases
 
cerebral blood flow
 
functional imaging data
 
images
 
imaging technologies
 
morphological information
 
multi-detector row computed tomography
 
multiple diagnostic techniques
 
multiplier effect
 
perfusion studies
 
radiation complications
 
radiation dose increases
 
radiation exposure
 
serial CT examinations
 
serial examinations
 
temporary
 
temporary bandage-shaped hair loss
 
temporary hair loss
 
vascular disorders
 

Yoshimasa Imanishi