Diagnostic Value of Software-Based Image Fusion of Computed Tomography and F18-FDG PET Scans in Patients with Malignant Lymphoma

Table 2

Results of patient-based analysis with CT.

	TP	TN	FP	FN	𝑁	sens.	spec.	PPV	NPV	acc.	χ ′′	𝑃(χ²)	𝑃(𝐹)
Malignant lymphoma	45	45	14	5	109	90	76	76	90	82	45.2	<0.0001	<0.0001
Morbus Hodgkin	14	10	6	1	31	93	62	70	90	77	8.2	0.0041	0.0021
NHL	31	35	8	4	78	88	81	79	89	84	35.0	<0.0001	<0.0001
Low-grade NHL	9	7	5	1	22	90	58	64	87	72	3.6	0.057	0.031
High-grade NHL	22	25	2	1	50	95	92	91	96	94	35.3	<0.0001	<0.0001

TP: true positive, TN: true negative, FP: false positive, FN: false negative, 𝑁: number of subjects, sens.: sensitivity, spec.: specificity, PPV: positive predictive value, NPV: negative predictive value, acc.: accuracy, 𝑃(χ²): 𝑃 value for Pearson’s Chi-squared test with Yates’ continuity correction, and 𝑃(𝐹): 𝑃 value for Fisher’s Exact Test for Count Data.