Since MR angiography (MR) can demonstrate the whole brain arterial system without introduction of contrast medium, it is very useful in screening for aneurysm, AVM and vascular occlusion in outpatients.
There are two methods in MRA-subtraction and non-subtraction methods (time of flight, TOF).
The magnetization transfer contrast (MTC) technique can demonstrate smaller vessels and slower blood flow than any conventional TOF-MRA.
Compared with the subtraction MRA, the MTC-TOF-MRA demonstrates smaller vessels clearly in a shorter time. By Gd-enhancement, the image of the arterial system can be also improved on the MTC method.

The experience at the time of a patient’s death can affect the mental health of bereaved families. Performing death pronouncements is an important skill for end-of-life care. However, almost no educational content regarding death pronouncements is presently included in medical educational programs. We have created a guidebook for “Physician behavior at the time of death pronouncement” based on the results of a questionnaire given to the families of deceased patients that included several items related to this topic. The purpose of this research was to investigate the educational effect of using this guidebook. The guidebook was given to 4th-year medical students attending the Yokohama City University School of Medicine. A survey was then conducted to assess evaluations of self-practice and feelings of difficulty at the time of making death pronouncements both before and after the class. Among the 39 students who provided valid responses, the majority (89.5%) indicated that they had difficulty with the item regarding “the specific method of death pronouncement.” A significant improvement was observed between the responses obtained before and those obtained after the class. We concluded that our guidebook for physician behavior at the time of death pronouncement might be useful for the education of medical students.