let demoFiles = [];

            // init all
            larvitar.initializeImageLoader();
            larvitar.initializeCSTools();
            larvitar.store.initialize();
            larvitar.store.addViewport("viewer");

            function renderPDF() {
              larvitar.resetLarvitarManager();
              larvitar
                .readFile(demoFiles[0])
                .then(image => {
                  larvitar.updateLarvitarManager(image);
                  let manager = larvitar.getLarvitarManager();
                  let serie =
                    manager["1.2.276.0.7230010.3.1.3.296485376.1.1664404001.305752"];
                  larvitar.renderDICOMPDF(serie, "viewer", true).then(() => {
                    larvitar.addDefaultTools();
                    larvitar.setToolActive("Pan"); //sx pan dx zoom
                  });
                })
                .catch(err => console.log(err));
            }

            async function createFile(fileName, cb) {
              let response = await fetch("./demo/" + fileName);
              let data = await response.blob();
              let file = new File([data], fileName);
              demoFiles.push(file);
              cb();
            }
            createFile("pdf.dcm", renderPDF);