Abstract
Objectives
To evaluate the concordance between DECT perfusion and ventilation/perfusion (V/Q) scintigraphy in diagnosing chronic thromboembolic pulmonary hypertension (CTEPH).
Methods
Eighty patients underwent V/Q scintigraphy and DECT perfusion on a 2nd- and 3rd-generation dual-source CT system. The imaging criteria for diagnosing CTEPH relied on at least one segmental triangular perfusion defect on DECT perfusion studies and V/Q mismatch on scintigraphy examinations.
Results
Based on multidisciplinary expert decisions that did not include DECT perfusion, 36 patients were diagnosed with CTEPH and 44 patients with other aetiologies of PH. On DECT perfusion studies, there were 35 true positives, 6 false positives and 1 false negative (sensitivity 0.97, specificity 0.86, PPV 0.85, NPV 0.97). On V/Q scans, there were 35 true positives and 1 false negative (sensitivity 0.97, specificity 1, PPV 1, NPV 0.98). There was excellent agreement between CT perfusion and scintigraphy in diagnosing CTEPH (kappa value 0.80). Combined information from DECT perfusion and CT angiographic images enabled correct reclassification of the 6 false positives and the unique false negative case of DECT perfusion.
Conclusion
There is excellent agreement between DECT perfusion and V/Q scintigraphy in diagnosing CTEPH. The diagnostic accuracy of DECT perfusion is reinforced by the morpho-functional analysis of data sets.
Key Points
• Chronic thromboembolic pulmonary hypertension (CTEPH) is potentially curable by surgery.
• The triage of patients with pulmonary hypertension currently relies on scintigraphy.
• Dual-energy CT (DECT) can provide standard diagnostic information and lung perfusion from a single acquisition.
• There is excellent agreement between DECT perfusion and scintigraphy in separating CTEPH and non-CTEPH patients.
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Abbreviations
- CT:
-
Computed tomography
- CTA:
-
Computed tomography angiography
- CTEPH:
-
Chronic thromboembolic pulmonary hypertension
- DECT:
-
Dual-energy CT
- MDCT:
-
Multidetector CT
- PAH:
-
Pulmonary arterial hypertension
- PBV:
-
Pulmonary blood volume
- PH:
-
Pulmonary hypertension
- V/Q:
-
Ventilation/perfusion
References
Simonneau G, Gatzoulis MA, Adiata I et al (2013) Updated clinical classification of pulmonary hypertension. J Am Coll Cardiol 62:D34–D41
Lang I, Madani M (2014) Update on chronic thromboembolic pulmonary hypertension. Circulation 130:508–518
Ascha M, Renapurkar RD, Tonelli AR (2017) A review of imaging modalities in pulmonary hypertension. Ann Thorac Med 12:61–73
Mc Laughlin VV, Langer A, Tan M et al (2013) Contemporary trends in the diagnosis and management of pulmonary arterial hypertension. An initiative to close the care gap. Chest 143:324–332
Galie N, Humbert M, Vachiery JL et al (2016) 2015 ESC/ERS guidelines for the diagnosis and treatment of pulmonary hypertension. Eur Heart J 37:67–119
Piazza G, Goldhaber SZ (2011) Chronic thromboembolic pulmonary hypertension. N Engl J Med 364:351–360
Mc Cann C, Gopalan D, Sheares K, Screaton N (2012) Imaging of pulmonary hypertension, part 1: clinical perspectives, classification, imaging techniques and imaging algorithm. Postgrad Med J 88:271–279
Freed BH, Collins JD, François CJ et al (2016) MR and CT imaging for the evaluation of pulmonary hypertension. JACC Cardiovasc Imaging 9:715–732
Fuld MK, Halaweisch AF, Haynes SE et al (2013) Pulmonary perfused blood volume with dual-energy CT as surrogate for pulmonary perfusion assessed with dynamic multidetector CT. Radiology 267:747–756
Pelgrim GJ, van Hamersvek RW, Willemink MJ et al (2017) Accuracy of iodine quantification using dual-energy CT in latest generation dual source and dual layer CT. Eur Radiol 27:3904–3912
Felloni P, Duhamel A, Faibre JB et al (2017) Regional distribution of pulmonary blood volume with dual-energy computed tomography: results in 42 subjects. Acad Radiol 11:1412–1421
Renard B, Remy-Jardin M, Santangelo T et al (2011) Dual-energy CT angiography of chronic thromboembolic disease: can it help recognize links between the severity of pulmonary arterial obstruction and perfusion defects? Eur J Radiol 79:467–472
Hoey ETD, Mirsadraee S, Pepke-Zaba J, Jenkins DP, Gopalan D, Screaton NJ (2011) Dual-energy CT angiography for assessment of regional pulmonary perfusion in patients with chronic thromboembolic pulmonary hypertension: initial experience. AJR Am J Roentgenol 196:524–532
Nakazawa T, Watanabe Y, Hori Y et al (2011) Lung perfused blood volume images with dual-energy computed tomography for chronic thromboembolic pulmonary hypertension: correlation to scintigraphy with single-photon emission computed tomography. J Comput Assist Tomogr 35:590–595
Le Faivre J, Duhamel A, Khung S et al (2016) Impact of perfusion imaging on the assessment of peripheral chronic pulmonary thromboembolism: clinical experience in 62 patients. Eur Radiol 26:4011–4020
Dournes G, Verdier D, Montaudon M et al (2014) Dual-energy CT perfusion and angiography in chronic thromboembolic pulmonary hypertension: diagnostic accuracy and concordance with radionuclide scintigraphy. Eur Radiol 24:42–51
Giordano J, Khung S, Duhamel A et al (2017) Lung perfusion characteristics in pulmonary arterial hypertension (PAH) and peripheral forms of chronic thromboembolic pulmonary hypertension (pCTEPH): dual-energy CT experience in 31 patients. Eur Radiol 27:1631–1639
Boyden EA (1954) Segmental anatomy of the lungs. McGraw Hill, New York
Bajc M, Neilly JB, Miniati M et al (2009) EANM guidelines for ventilation/perfusion scintigraphy. Eur J Nucl Med Mol Imaging 36:1356–1370
Cohen J (1960) A coefficient of agreement for nominal scales. Educ Psychol Meas 20:37–46
Fleiss JL (1986) Reliability of measurement. In: The design and analysis of clinical experiments. Wiley, Hoboken, p 1–32
Takagi H, Ota H, Sugimura K et al (2016) Dual-energy CT to estimate clinical severity of chronic thromboembolic pulmonary hypertension: comparison with invasive right heart catheterisation. Eur J Radiol 85:1574–1580
Pontana F, Faivre JB, Remy-Jardin M et al (2008) Lung perfusion with dual-energy multidetector-row CT (MDCT): feasibility for the evaluation of acute pulmonary embolism in 117 consecutive patients. Acad Radiol 15:1494–1504
Takx RAP, Henzler T, Schoepf UJ et al (2017) Predictive value of perfusion defects on dual-energy CTA in the absence of thromboembolic clots. J Cardiovasc Comput Tomogr 11:183–187
Tamura M, Yamada Y, Kawakami T et al (2017) Diagnostic accuracy of lung subtraction iodine mapping CT for the evaluation of pulmonary perfusion in patients with chronic thromboembolic pulmonary hypertension: correlation with SPECT/CT. Int J Cardiol 243:538–543
Hong YJ, Kim JY, Choe KO et al (2013) Different perfusion pattern between acute and chronic pulmonary thromboembolism: evaluation with two-phase dual-energy perfusion CT. AJR Am J Roentgenol 200:812–817
Koike H, Sueyoshi E, Sakamoto I, Uetani M (2017) Clinical significance of late phase lung perfusion blood volume (LPBV) quantified by dual-energy computed tomography in patients with thromboembolism. J Thorac Imaging 32:43–49
Wagenvoort CA (1995) Pathology of pulmonary thromboembolism. Chest 107:10S–17S
Oser RF, Zuckerman DA, Guttierez FR, Brink JA (1996) Anatomic distribution of pulmonary emboli at pulmonary angiography: implications for cross-sectional imaging. Radiology 199:31–35
Burrowes KS, Clark AR, Tawhai MH (2011) Blood flow redistribution and ventilation-perfusion mismatch during embolic pulmonary arterial occlusion. Pulm Circ 1:365–376
Tang CX, Yang GF, Schoepf UJ et al (2016) Chronic thromboembolic pulmonary hypertension comparison of dual-energy computed tomography and single photon emission computed tomography in canines. Eur J Radiol 85:498–506
Kim BH, Seo JB, Chae EJ et al (2012) Analysis of perfusion defects by causes other than acute pulmonary thromboembolism on contrast-enhanced dual-energy CT in consecutive 537 patients. Eur J Radiol 81:e647–e652
Ohira H, Beanlands RS, Davies RA, Mielniczuk L (2015) The role of nuclear imaging in pulmonary hypertension. J Nucl Cardiol 22:141–157
Ling IT, Naqvi HA, Siew TK, Loh NK, Ryan GF (2012) SPECT ventilation perfusion scanning with the addition of low-dose CT for the investigation of suspected pulmonary embolism. Intern Med J 42:1257–1261
Lu Y, Lorenzoni A, Fox JJ et al (2014) Noncontrast perfusion single-photon emission CT/CT scanning. A new test for the expedited, high-accuracy diagnosis of acute pulmonary embolism. Chest 145:1079–1088
Dong C, Zhou M, Liu D et al (2015) Diagnostic accuracy of computed tomography for chronic thromboembolic pulmonary hypertension: a systematic review and meta-analysis. PLoS One 10:e0126985
Tunariu N, Gibbs SJR, Win Z et al (2007) Ventilation-perfusion scintigraphy is more sensitive than multidetector CTPA in detecting chronic thromboembolic pulmonary disease as a treatable cause of pulmonary hypertension. J Nucl Med 48:680–684
Meinel FG, Graef A, Thierfelder KM et al (2014) Automated quantification of pulmonary perfused blood volume by dual-energy CTPA in chronic thromboembolic pulmonary hypertension. Rofo 186:151–156
Rajaram S, Swift AJ, Capener D et al (2012) Diagnostic accuracy of contrast-enhanced MR angiography and unenhanced proton MR imaging compared with CT pulmonary angiography in chronic thromboembolic pulmonary hypertension. Eur Radiol 22:310–317
Ley S (2015) Imaging pulmonary arterial thromboembolism: challenges and opportunities. Magn Reson Imaging Clin N Am 23:261–271
Francois CJ (2016) Schiebler ML. Imaging of pulmonary hypertension. Radiol Clin North Am 54:1133–1149
Goldberg AB, Mazur W, Kalra DK (2017) Pulmonary hypertension: diagnosis, imaging techniques and novel therapies. Cardiovasc Diagn Ther 78:405–417
Renapurkar RD, Shrikanthan S, Heresi GA et al (2017) Imaging in chronic thromboembolic pulmonary hypertension. J Thorac Imaging 32:71–88
Johns CS, Swift A, Rajaram S et al (2017) Lung perfusion: MRI versus SPECT for screening in suspected chronic thromboembolic pulmonary hypertension. J Magn Reson Imaging 46:1693–1697
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The scientific guarantor of this publication is Pr Martine Remy-Jardin.
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Only two authors Martine Remy-Jardin and Jacques Remy declare conflict of interest with Siemens Healthineers.
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• retrospective
• observational
• performed at one institution
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Masy, M., Giordano, J., Petyt, G. et al. Dual-energy CT (DECT) lung perfusion in pulmonary hypertension: concordance rate with V/Q scintigraphy in diagnosing chronic thromboembolic pulmonary hypertension (CTEPH). Eur Radiol 28, 5100–5110 (2018). https://doi.org/10.1007/s00330-018-5467-2
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DOI: https://doi.org/10.1007/s00330-018-5467-2