Glutamine/Glutamate Metabolism Studied with Magnetic Resonance Spectroscopic Imaging for the Characterization of Adrenal Nodules and Masses

Table 1

Descriptive analysis of lesions with regard to Glx/Cr and Lac/Cr ratios*.

	Glx/Cr			Lac/Cr
	Mean ± SD	Median	Range	Mean ± SD	Median	Range
Adenomas	2.13±1.88	1.69	0–8.77	−3.39±7.12	0	−38.84–1.72
Pheochromocytomas	1.37±1.20	1.13	−1–4.05	−4.64±5.88	−2.5	−22.9–0.93
Carcinomas	2.65±2.82	1.55	0.56–8.2	−10.8±6.34	−9.04	−21.9–−2.56
Metastases	1.95±1.44	1.70	0.12–4.1	−3.62±2.98	−4.23	−7.3–0

Glx/Cr: glutamine/glutamate-creatine ratio; Lac/Cr: lactate-creatine ratio; SD: standard deviation.
∗All comparisons resulted nonsignificant (𝑃>0.01).