我已成功地使用一个图像构建了DICOM文件,但是我无法找到一种添加更多图像的方法...... 我认为问题可能出在我的像素数组上,请问有谁可以帮我纠正一下吗?
# Populate required values for file meta information
meta = pydicom.Dataset()
meta.TransferSyntaxUID = pydicom.uid.ExplicitVRLittleEndian
meta.MediaStorageSOPClassUID = pydicom._storage_sopclass_uids.MRImageStorage
meta.MediaStorageSOPInstanceUID = pydicom.uid.generate_uid()
# build dataset
ds = Dataset()
ds.file_meta = meta
ds.fix_meta_info()
# unknown options
ds.is_little_endian = True
ds.is_implicit_VR = False
ds.SOPClassUID = pydicom._storage_sopclass_uids.MRImageStorage
ds.SeriesInstanceUID = pydicom.uid.generate_uid()
ds.StudyInstanceUID = pydicom.uid.generate_uid()
ds.FrameOfReferenceUID = pydicom.uid.generate_uid()
ds.BitsStored = 16
ds.BitsAllocated = 16
ds.SamplesPerPixel = 1
ds.HighBit = 15
ds.ImagesInAcquisition = "1"
ds.InstanceNumber = 1
ds.ImagePositionPatient = r"0\0\1"
ds.ImageOrientationPatient = r"1\0\0\0\-1\0"
ds.ImageType = r"ORIGINAL\PRIMARY\AXIAL"
ds.RescaleIntercept = "0"
ds.RescaleSlope = "1"
ds.PixelRepresentation = 1
# Case options
ds.PatientName = "Anonymous"
ds.PatientID = "123456"
ds.Modality = "MR"
ds.StudyDate = '20200225'
ds.ContentDate = '20200225'
def ensure_even(stream):
# Very important for some viewers
if len(stream) % 2:
return stream + b"\x00"
return stream
pixel_data_list = []
for root, dir, filenames in walk(folder):
filenames.sort(key=natural_keys)
for filename in filenames:
filename = folder + filename
# convert image to grayscale
img = Image.open(filename).convert('L')
img.save(filename)
# open image, decode and ensure_even stream
with open(filename, 'rb') as f:
arr = decode(f)
pixel_data_list.append(arr.tobytes())
# required for pixel handler
ds.BitsStored = 8
ds.BitsAllocated = 8
ds.HighBit = 7
ds.PixelRepresentation = 0
# grayscale without compression
ds.PhotometricInterpretation = "MONOCHROME2"
ds.SamplesPerPixel = 1 # 1 color = 1 sampleperpixel
ds.file_meta.TransferSyntaxUID = pydicom.uid.ExplicitVRLittleEndian
ds.PixelData = array(pixel_data_list)
ds.NumberOfFrames = len(pixel_data_list)
# Image shape
ds['PixelData'].is_undefined_length = False
ds.Columns = img.width
ds.Rows = img.height
# validate and save
pydicom.dataset.validate_file_meta(ds.file_meta, enforce_standard=True)
new_filename = filename.replace('.jpg', name + '.dcm')
ds.save_as(new_filename, write_like_original=False)
此外,似乎无法压缩图像,只有单色效果有效(请参见尝试https://dev59.com/PGYq5IYBdhLWcg3wmRya#68939321)......
不过这并不是问题的关键,最重要的是能够添加多个图像。感谢任何指导!