Apparent diffusion coefficient as an effective index for the therapeutic efficiency of brain chemoradiotherapy for brain metastases from lung cancer

Table 2 Description of MRI parameters for Philips Achieva 1.5 T SE MRI systems

	T1WI	T2WI	FLAIR	DWI	Contrast-enhanced^*
TR (ms)	488	4748	8000	3090	156
TE (ms)	15	110	120	102	2.4
TI (ms)	–	–	2200	–	–
Slice thickness (mm)	6	6	6	6	6
Slice gap (mm)	1	1	1	1	1
Slice number of scanning (layers)	18	18	18	18	20
Scanning time (s)	24	42	24	36	22
NSA	1	2	2	1	2
Field of view (mm²)	230 × 201	230 × 201	230 × 183	230 × 201	230 × 199
Matrix	256 × 256	256 × 256	256 × 512	152 × 256	388 × 640

^*The Contrast-enhanced scan was performed by rapid bolus injection of gadopentate glucosamine (Gd-DTPA) at a dose of 0.1 mmol/kg through the cubital vein at a flow rate of 2.5 ml/s. After bolus injection, 20 mL of saline was intravenously injected. B-values for DWI are 0 s/mm² and 1000 s/mm²

ISSN: 1471-2342