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1.5T Body diffusion weighted imaging using SENSE - Japan

ExamCard
Matsumoto, Mitsuyo, R.T. Philips Healthcare Japan
Suwa, Akira, R.T. Philips Healthcare Japan

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ExamCard purpose

This release 1.5.1 ExamCard was designed to compare the different diffusion parameters.

ExamCard overview

ExamCard images

Low b-8 breath hold <br> <br>Scan parameters: sDWI b-800 breath hold <br> <br>Scan parameters: sDWI b-800 high resolution RT <br>Scan parameters:
Low b-8 breath hold

Scan parameters:
sDWI b-800 breath hold

Scan parameters:
sDWI b-800 high resolution RT
Scan parameters:

Note: click on a scan parameter column to enlarge.

Examples of Comparisions

DWI with a b-8 factor Images acquired with a low b-factor give a T2W image with a suppressed signal from blood. This helps to excel in detecting lesions.
For example compare this image obtained with a b-8 factor with the T2W TSE image below,  both indicating an hemangioma (orange arrow).SENSE-DWI with a b-factor between 500 and 1000 High b-factors reduce the signal received from normal tissue, while many suspicious lesions have a high signal. For example compare the above diffusion image indicating liver lesions with the  contrast enhanced T1W FFE image below. Both are from the same patient.SENSE DWI with RT Acquiring high resolution SENSE DW images using repiratory triggering rather than breath hold makes it possible to increase the matrix size without increasing the time the patient has to hold their breath.This will increase the image resolution as seen when comparing this respiratory trigger image with the breath hold image below. Both are from the same patient.
DWI with a b-8 factor
SENSE-DWI with a b-factor between 500 and 1000
SENSE DWI with RT
Images acquired with a low b-factor give a T2W image with a suppressed signal from blood. This helps to excel in detecting lesions. For example compare this image obtained with a b-8 factor with the T2W TSE image below, both indicating an hemangioma (orange arrow).
High b-factors reduce the signal received from normal tissue, while many suspicious lesions have a high signal. For example compare the above diffusion image indicating liver lesions with the contrast enhanced T1W FFE image below. Both are from the same patient.
Acquiring high resolution SENSE DW images using repiratory triggering rather than breath hold makes it possible to increase the matrix size without increasing the time the patient has to hold their breath.This will increase the image resolution as seen when comparing this respiratory trigger image with the breath hold image below. Both are from the same patient.
T2W TSE with fat supression Contrast enhanced <br> T1W FFE SENSE DWI with BH
T2W TSE with fat supression
Contrast enhanced
T1W FFE
SENSE DWI with BH

Patient preparation

The SENSE Body coil was used.


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Dec 13, 2007

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ExamCard
Achieva 1.5T
Release 1
Body, DWI, Liver
 

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