Diagnostic Value of Breast Proton Magnetic Resonance Spectroscopy at 1.5T in Different Histopathological Types

Table 2

Summary of tumor size, tCho detection rate, and tCho concentration level in histopathological types.

Tumor type	Mean size (cm)	No. of true positives	No. of false negatives	tCho detection rate*	Mean tCho (mmol/kg)
IC	2.9	62	26	71%	2.65
IDC	3.2	49	17	74%	2.49
ILC	2.3	5	5	50%	2.70
Mixed	2.4	8	4	67%	3.92
DCIS	2.4	3	8	27%	1.57
Benign	1.6	1 (false+)	12 (true−)		0.66

IC: invasive cancer, IDC: invasive ductal carcinoma, ILC: invasive lobular carcinoma, mixed: mixed invasive ductal and lobular carcinoma, and DCIS: ductal carcinoma in situ. *𝑃=0.025 (IC versus DCIS), where the significance level was set at 𝑃<0.05.